Difference between Modular Router Vs Non-modular router

What is Non-modular router?

Non-modular router are low-end router and have fixed interfaces/Cards, we cannot able to add ports/interfaces latter on. This class of routers used to connect a home or small business ISP users. Non-modular router not only provides SLIP or PPP connection, also supports other protocols such as virtual private network protocols PPTP and IPSec, etc. Technologies such as ADSL will soon enhance the family available for each broadband , which will further increase the access router afford. Because of these trends, Non-modular router in the future will support many heterogeneous and high-speed ports, and the ability to run multiple protocols on each port.

Compared with modular router

The term Modular router describing a router that you can extend with certain components, such as interfaces, encryption accelerators, sound processing modules, etc. Modular router mainly refers to the interface type of the router and some extensions are based on the actual needs of the user router can be configured at the factory these routers generally provide the basic routing functions, users can be connected to the type of network to Select the appropriate module, different modules can provide different connectivity and management capabilities. For example, most modular router allows users to select a network interface type, some modular routers can provide VPN and other functional modules, some modular router also provides firewall functions, and so on. Most current routers are modular router.

ISR routers are a particular line of Cisco routers, namely, 800, 1800, 2800, and 3800 series are modular routers.